Block adaptive selection of multiple core transforms for video coding

Santiago De-Luxán-Hernández; Detlev Marpe; Heiko Schwarz; Klaus Robert Müller; Mathias Wien; Jens Rainer Ohm; Thomas Wiegand

doi:10.1109/PCS.2016.7906349

Block adaptive selection of multiple core transforms for video coding

Santiago De-Luxán-Hernández, Detlev Marpe, Heiko Schwarz, Klaus Robert Müller, Mathias Wien, Jens Rainer Ohm, Thomas Wiegand

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Citations (Scopus)

Abstract

Transform coding tools in video coding have traditionally relied on the Discrete Cosine Transform Type II (DCT-II) to map residual signals to a new domain where quantization and entropy coding tools achieve a better coding efficiency than in the spatial domain. However, the DCT-II is not sufficient to model all different types of residual signals efficiently, especially in the intra-predicted blocks case. For this reason, the DST-VII was introduced in H.265/High Efficiency Video Coding (HEVC) in order to improve the compression performance of 4 × 4 intra-predicted blocks. In this paper we propose a multiple core transform approach, in which each transform is separable and generated by combining two one-dimensional transforms for the vertical and horizontal directions. The pair of 1-D transforms is selected from a set of three different types of Discrete Trigonometric Transforms and the Identity Transformation. Test results show that the proposed algorithm achieves bit rate reductions of 3% on average with respect to HEVC for intra-predicted residuals.

Original language	English
Title of host publication	2016 Picture Coding Symposium, PCS 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781509059669
DOIs	https://doi.org/10.1109/PCS.2016.7906349
Publication status	Published - 2017 Apr 19
Externally published	Yes
Event	2016 Picture Coding Symposium, PCS 2016 - Nuremberg, Germany Duration: 2016 Dec 4 → 2016 Dec 7

Publication series

Name	2016 Picture Coding Symposium, PCS 2016

Other

Other	2016 Picture Coding Symposium, PCS 2016
Country/Territory	Germany
City	Nuremberg
Period	16/12/4 → 16/12/7

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Keywords

Discrete Trigonometric Transforms
Intra Coding
Multiple Transforms
Separable Transforms
Transform Coding

ASJC Scopus subject areas

Media Technology
Signal Processing

Access to Document

10.1109/PCS.2016.7906349

Cite this

De-Luxán-Hernández, S., Marpe, D., Schwarz, H., Müller, K. R., Wien, M., Ohm, J. R., & Wiegand, T. (2017). Block adaptive selection of multiple core transforms for video coding. In 2016 Picture Coding Symposium, PCS 2016 Article 7906349 (2016 Picture Coding Symposium, PCS 2016). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PCS.2016.7906349

Block adaptive selection of multiple core transforms for video coding. / De-Luxán-Hernández, Santiago; Marpe, Detlev; Schwarz, Heiko et al.
2016 Picture Coding Symposium, PCS 2016. Institute of Electrical and Electronics Engineers Inc., 2017. 7906349 (2016 Picture Coding Symposium, PCS 2016).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

De-Luxán-Hernández, S, Marpe, D, Schwarz, H, Müller, KR, Wien, M, Ohm, JR & Wiegand, T 2017, Block adaptive selection of multiple core transforms for video coding. in 2016 Picture Coding Symposium, PCS 2016., 7906349, 2016 Picture Coding Symposium, PCS 2016, Institute of Electrical and Electronics Engineers Inc., 2016 Picture Coding Symposium, PCS 2016, Nuremberg, Germany, 16/12/4. https://doi.org/10.1109/PCS.2016.7906349

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abstract = "Transform coding tools in video coding have traditionally relied on the Discrete Cosine Transform Type II (DCT-II) to map residual signals to a new domain where quantization and entropy coding tools achieve a better coding efficiency than in the spatial domain. However, the DCT-II is not sufficient to model all different types of residual signals efficiently, especially in the intra-predicted blocks case. For this reason, the DST-VII was introduced in H.265/High Efficiency Video Coding (HEVC) in order to improve the compression performance of 4 × 4 intra-predicted blocks. In this paper we propose a multiple core transform approach, in which each transform is separable and generated by combining two one-dimensional transforms for the vertical and horizontal directions. The pair of 1-D transforms is selected from a set of three different types of Discrete Trigonometric Transforms and the Identity Transformation. Test results show that the proposed algorithm achieves bit rate reductions of 3% on average with respect to HEVC for intra-predicted residuals.",

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AU - Ohm, Jens Rainer

AU - Wiegand, Thomas

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N2 - Transform coding tools in video coding have traditionally relied on the Discrete Cosine Transform Type II (DCT-II) to map residual signals to a new domain where quantization and entropy coding tools achieve a better coding efficiency than in the spatial domain. However, the DCT-II is not sufficient to model all different types of residual signals efficiently, especially in the intra-predicted blocks case. For this reason, the DST-VII was introduced in H.265/High Efficiency Video Coding (HEVC) in order to improve the compression performance of 4 × 4 intra-predicted blocks. In this paper we propose a multiple core transform approach, in which each transform is separable and generated by combining two one-dimensional transforms for the vertical and horizontal directions. The pair of 1-D transforms is selected from a set of three different types of Discrete Trigonometric Transforms and the Identity Transformation. Test results show that the proposed algorithm achieves bit rate reductions of 3% on average with respect to HEVC for intra-predicted residuals.

AB - Transform coding tools in video coding have traditionally relied on the Discrete Cosine Transform Type II (DCT-II) to map residual signals to a new domain where quantization and entropy coding tools achieve a better coding efficiency than in the spatial domain. However, the DCT-II is not sufficient to model all different types of residual signals efficiently, especially in the intra-predicted blocks case. For this reason, the DST-VII was introduced in H.265/High Efficiency Video Coding (HEVC) in order to improve the compression performance of 4 × 4 intra-predicted blocks. In this paper we propose a multiple core transform approach, in which each transform is separable and generated by combining two one-dimensional transforms for the vertical and horizontal directions. The pair of 1-D transforms is selected from a set of three different types of Discrete Trigonometric Transforms and the Identity Transformation. Test results show that the proposed algorithm achieves bit rate reductions of 3% on average with respect to HEVC for intra-predicted residuals.

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ER -

Block adaptive selection of multiple core transforms for video coding

Abstract

Publication series

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Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this